Here is how I understand the mechanic of the optical mouse. An optical mouse uses an optical part (LED or infrared light) to capture the surface beneath. It does this process multiple times per second, then calculates how far and fast it has moved and finally transforms to a coordinate of the cursor on the screen. But why it cannot work if I lift the mouse up and move along (not touch) a surface? Is it hard to process the images in that way or is it not friendly to users?
In: 0
When you lift the mouse, the image of the surface is no longer in focus. The sensor is a camera with some postprocessing to extract the motion. The lens is focused where the surface is during normal use.
The users that care about lift off distance generally want it to be as low as possible.
Lets say you’re moving the mouse left and hit the edge of the mousepad, You want to keep moving left, so you lift the mouse, move it to where you have more room, and continue. You don’t want the cursor to move while the mouse is in the air.
Latest Answers